Belt dressing and process of making the same



Patented July-23, 1929.

zannr-nnnssme Ann-rRooEss or mm No Drawing.

the nvention is to provide a leather belt dressmg characterized by high penetrating power,

Other organic neutralizing stability in the presence of moisture and under varying atmospheric conditions, substantial freedom from stickiness and drying tendencies, and other advantageous properties.

In accordance with a preferred form of m invention, a mixtureof the following ingredients in about the proportions stated is pre-' pared: t er C6D Lubricating oil (100-300 seconds Sayboltat 100 F.) Oil soluble sodium sulfonate 20 Neats-foot oil 10 y suitable mineral oil may be used, preterably of the lubricating type and Within the Viscosity range stated.

The oil-soluble sodium sulfonate may be prepared in the well-known manner by alcohol extraction of oil which has been acid treated and neutralized "for-the production of white oils and the like. This sodium sulfonate frequently contains a small amount of residual alkali, usually less than 2%. When this is the case, rosin may be added in amount suflicient only to neutralize residual alkali. The rosin is converted into a soap and does not have the objectionable properties which rosin is sometimes said to have in prior belt dressings in which it has been present as such. compounds, such as animals or vegetable oils, saponifiable by alkali in the presence of oil, may be used. When sulfonic soaps free from caustic are available the rosin or the like may be omitted. It is feasible to neutralize excess caustic before incorporating the sulfonate in the oil, but the procedure describe convenient.

The ,following ingredients may be comd is generally more pounded when a typical alkalicontaining sulfonate is used: P t (2r CCU Lubricatingoil (100-300 seconds Saybo1tatl00 F.) w Oil soluble sodium sulfonate 20 osin 2. 6 Neat -foot oil 7.4 While ll prefer to use a small amount of Application 'filed June 25,1925, Serial No.

alkali to be THE same,

neats foot oil, it isnot a necessary ingredient of my composition. The improved belt dressmg is made up. by dissolving the sodium sulfonate in the mineral oil. Heating and stirneutralized, added and the mixture is he oil is next allowed to rosin orthe like is heated and stirred. cool and settle, dun

y ing which some insoluble impurities may settle out. The neats-foot oil, if thisoil is to be used, is added while the oil is still warm.

he preferred proportions given may be varied widely, for example I. may use as inn-12H. as 50 )5 of sodium sulfonate, the remainder the composition consisting of lubricating oil. Although higher percentages of sodium sulfonate may be used, ordinarily no advantage is derived from so doing. Less than 10% of sodium sulfonate will not 1n general give'the desired result. Other alkali metal sult'onates may be substituted for sodium sulfonate.

Tests of my'bclt dressing show that it rendcrs the leather very'pliable, probably due to its unusual penetrating power. The leather is soft and adheres well to tie pulley. The dressing does not make the leather objectionably sticky or adherent to the driven surface. Water which maycome in contact with t-ha surface of the leather has no substantial adverse cfiect on the dressing. Leather treated with the dressing will absorb a reasonable amount of lubricatin oil which may ha pen to come in contactwi hit from near by earings, and the annoyance of a slippery belt therefore generally avoided.

I claim:

1. A composition adapted for use as 'a belt dressing, or the like, comprising a mineral oil of lubricating grade, oil soluble sodium sulfonate, and neats-foet oil.

2. A composition adapted for use as a belt dressing, or the like,.con:-prising a mineral oil of lubricating grade, oil soluble sodium sulfonate, saponified rosin, and neats-foot oil. 3, A composition adapted for use as a belt dressing, or the like, comprising about 70% by Weight of a mineral lubricating oil, about" 20% of oil-soluble sodium sulfonatc, about 2.6% of saponified rosin, and about 7.4% of neats-foot oil.

4. Process of making a composition adapt ed for use as belt dressing, or the like, comprising mixing a mineral oil of lubricating grade angi an oil-soluble sulfonate containing grade and an oil-soluble sulfonate containing ree alkali, adding rosin to react with such free alksili,;and reacting upon such alkali with jalkali 'he'ating 'and stirring the mixture to 10 I a normally solid' organic neutralizing agent. facilitate neutralizitiong cooling, settling, 5 5, Process of making a composition a'da'pt- 'and'removing any deposited impurities.

ed for use asabelt dressing,or thelike,com- 7 i prising mixing a mineral oil of lubricating. v ARMAN E. BECKER. 

